Basic Science

Len Academy Examination Questions for Basic Science, JSS2, 2nd Term

len Alfred Ajibola - Sat, 25th July, 2020 @ 09:33: AM

Topics in Basic Science

Types of Carbohydrates: Monosaccharides and Polysaccharides Carbohydrates: Disaccharides and Oligosaccharides Len Academy Examination Questions for Basic Science, JSS2, 2nd Term Len Academy Examination Questions for Basic Science, JSS3, 3rd Term Len Academy Examination Questions for Basic Science, JSS3, 2nd Term Primates - Characteristics of Primates Effects of Improper Waste Management Waste Management: Causes of Waste Concept of Mass and Weight Sources, Functions and Deficiencies of Mineral Salts (Macro-nutrients) Sources, Functions and Deficiencies of Mineral Salts (Micro-nutrients) Len Academy questions for Basic Science JSS1, second Term Len Academy mid-term test questions for Basic Science JSS1, 2nd Term Micro organisms causing food, water and air borne Diseases Vectors - Examples of Vectors, Vector borne Organisms and the Diseases they cause Bones of the Human Skeleton Meaning of Drugs, Type of Drugs and Side effects of Drugs Immunization, Processes involved in immunization and its importance Food: What is food? Uniqueness of Man: Unique Characteristics of Man


Academic Questions in Basic Science

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____ is formed from a reaction utilizing oxygen and glucose in the mitochondria of cells.

  • A. Galactose

  • B. Fructose

  • C. Sucrose

  • D. AMP

  • E. ADP

  • F. ATP

Which of the following statement is false concerning carbohydrates?

  • A. They are composed of carbon, hydrogen and oxygen only

  • B. Carbon has the highest ratio of the constituent elements of carbohydrates

  • C. All carbohydrates are sugars

  • D. Fructose is a carbohydrate

  • E. Natural milk contains lactose and it's a carbohydrate

  • F. Fatty foods contains high calories of energy when compared to the same quantity of carbohydrate foods

Which of the following is a class of food?

  • A. Water

  • B. Fibre

  • C. Roughages

  • D. Latex

  • E. Tanins

  • F. Wax

Brachiation is a specialized form of movement exhibited by _____.

  • A. Human beings

  • B. Babbons

  • C. Chameleons

  • D. Toads

  • E. Millipedes

  • F. Birds

_____ is a form of locomotion whereby an organism move by means of its two hind limbs.

  • A. Pedalism

  • B. Duo Pedalism

  • C. Double Pedalism

  • D. Dual Pedalism

  • E. Bipedalism

  • F. Copedalism

The human brain is folded into gyri, grooved into sulci and also the most developed among all organisms in the universe.

  • A. True

  • B. False

According to science, all human beings are animals.

  • A. True

  • B. False

Biomedic wastes are also referred to as _____ wastes.

  • A. Hospital

  • B. Recyclable

  • C. Metabolic

  • D. Green

  • E. Radioactive

  • F. Electronic

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Basic Science Questions, JSS2, Second Term:

1. Which of the following is NOT an animal?

  1. Termite
  2. Cactus
  3. Centipede
  4. Bat
  5. Please read this article here for correct Answer.

 

2. Which of the following is NOT a mammal?

  1. Whale
  2. Shark
  3. Bat
  4. Mouse

 

3. Urea is produced from a process called _____.

  1. Detoxification
  2. Deamination
  3. Ultrafiltration
  4. Selective Reabsorption

 

4. The stimulus picked by the eye is _____.

  1. Chemical
  2. Sight
  3. Vision
  4. Light

 

5. A similar group of fat storage cells found beneath the skin are called _____ tissues.

  1. Connective
  2. Adipose
  3. Epithelial
  4. Vascular

You can attempt Len Academy Questions on various Subjects (with Answers) here.

6. The middle layer of the epidermis is the _____.

  1. Cornified
  2. Granular
  3. Malpighian
  4. Dermis

 

7. The metabolic waste product excreted by the lungs is _____.

  1. Carbon monoxide
  2. Carbon dioxide
  3. Ammonia
  4. Ammonium

 

8. The excretory organ found in flatworms are the _____.

  1. Malpighian tubules
  2. Contractile vacoules
  3. Flame cells
  4. Lenticels

 

9. The functional unit of the kidneys are the _____.

  1. Capillaries
  2. Renal vessels
  3. Nephrons
  4. Hepatocytes

You can read various Motivational Quotes for Students here.

10. The _____ connects the kidneys to the bladder.

  1. Ureter
  2. Urethra
  3. Renal Artery
  4. Renal vein

 

11. The male sex hormone is the _____.

  1. Spermatozoa
  2. Semen
  3. Testosterone
  4. Oestrogen
  5. You can read on the Male Reproductive System (Scrotum and its Contents) here.

 

12. Which of the following is NOT a gamete?

  1. Ovary
  2. Sperm
  3. Ova
  4. Pollen grains

 

13. Fertilization takes place in the _____.

  1. Ovary
  2. Oviduct
  3. Uterus
  4. Cervix

 

14. The hormone responsive for ovulation is _____.

  1. Oestrogen
  2. Follicle Stimulating Hormone (FSH)
  3. Luteinizing Hormone (LH)
  4. Thyroid Hormone

 

15. A particulate Nature of matter is the _____.

  1. Ion
  2. Compound
  3. Element
  4. Mixture
  5. You can read on the Concept of Matter here.

 

16. Sodium has an atomic mass of 23. Its number of electrons is _____.

  1. 32
  2. 23
  3. 11
  4. 12
  5. Please read on the Periodic Table of Elements here.

 

17. The lightest known element is _____.

  1. Sodium (Na)
  2. Helium (He)
  3. Oxygen (O)
  4. Hydrogen (H)

Please read on what every Student is expected to know here.

18. An element used in filling balloons is _____.

  1. Oxygen
  2. Helium
  3. Nitrogen
  4. Carbon

 

19. Group of ions with a specific charge are termed _____.

  1. Radicals
  2. Valence Electrons
  3. Compounds
  4. Ions

 

20. Carbon Hydroxide is chemically represented as _____.

  1. Ca(OH)2
  2. CaOH
  3. Can2OH
  4. CaOH2

 

21. Blood is a mixture separated by _____.

  1. Distillation
  2. Fractional Distillation
  3. Separating Funnel
  4. Centrifugation
  5. Please read on the Separation of Blood (Mixtures) here.

 

22. Which of the following element is a metalloid?

  1. Silicon
  2. Carbon
  3. Magnesium
  4. Argon

 

23. The group VIII elements can also be called the following gases except _____.

  1. Alkali gas
  2. Noble gas
  3. Inert gas
  4. Rare gas

 

24. _____ is a fraction of petroleum used for road surfacing.

  1. Fuel oil
  2. Bitumen
  3. Natural gas
  4. Heavy oil
  5. Please read on Fractional Distillation of Petroleum here.

 

25. NH4+ is simply referred to as _____.

  1. Nitrogen Hydride ion
  2. Hydrogen Nitride ion
  3. Ammonia ion
  4. Ammonium ion
  5. Please read on Lewis Acid. Answer is present here.

 

26. Scientists involved in oil exploration are called _____.

  1. Geologist
  2. Geophysicists
  3. Mechanical Engineers
  4. Chemical Engineers

 

27. The components of crude oil are separated in the _____.

  1. Distilling column
  2. Separating Column
  3. Separating Funnel
  4. Fractionating column
  5. Please read on the Separation of Crude oil here.

 

28. The Standard International (SI unit for current is _____.

  1. Ohm
  2. Ampere
  3. Volts
  4. Watt
  5. Please read on the Fundamental and Derived Units in Physics. Answer is present here.

 

29. _____ power is involved in the Lifting of 25 litres of water via the use of hands.

  1. Mechanical
  2. Potential
  3. Kinetic
  4. Electrical

 

30. A ball of mass 12000g is released from a height of 10m. What is the potential energy of the ball)? (g=10m/s)

  1. 1.2KJ
  2. 1200KJ
  3. 120000KJ
  4. 1200000KJ

 

You can Attempt Len Academy Mid-Term Test Questions for JSS1 here.

You can attempt Len Academy Basic Science Examination Questions for JSS1, 2nd Term here.

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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.


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Amazing facts in Basic Science

🍅 Tomatoes 🍅 and 🥑 Avocados 🥑 are actually fruits, not vegetables

Sweat in itself doesn't smell. The smell that accompanies sweat is actually caused by the presence of bacteria on your skin. This bacteria breaks the sweat coming out of your sweat pores down into acids, thus making it smell.

Deodorants contains alcohol and are antibacterial. They work by killing the bacteria that makes sweat smell

Chewing aspirin during a heart attack may be a life saver. This is true because the drug inhibits platelets from forming a clot that can block an artery of the heart, thus stopping a heart attack

The kneecaps of newly born babies are not made of bone. Rather, they are little bits of cartilage which ossifies (turns from cartilages to bone) from age 2 to 6

Ice cubes made with fresh water are white in color while those made with boiled water are crystal clear

🐈 Cats 🐈 are unable to taste sweet things

🍎 Apples 🍎 actually float on water. Other fruits that float on water include 🍋 lemons, 🍌 bananas, 🍐 pears, and 🍊 oranges

Rain water contains vitamin B12.

Vitamin B12 is an important nutrient that keeps the blood cells and neurones healthy. It also assist in building the DNA (a genetic material present in the cell's nucleus). Vitamin B12 also aid in the prevention of megaloblastic anemia which makes people weak and tired

Rasceta is the name given to the lines on your ✋ palm ✋

Goats have rectangular pupils in their eyes.

Think of the pupil as a hole located in the centre of the iris within of the eye.

Note: To get an idea of an iris; 'when one is said to have blue eyes', it's because the iris is blue


NOTABLE POINTS IN Basic Science

Waste Management can be defined as the process of collecting, processing, recycling and controlling any material considered as waste.

Improperly disposed waste litters on road sides, in land fills, gutters and ditches. They are generally bad for the following reasons:

Wastes can be classified into various types. These are:

  • Biodegradable waste

  • Non-Biodegradable waste

  • Refuse

  • Sewage

  • Recyclable waste

  • Electronic waste

  • Green waste

  • Biomedical waste

  • Metabolic waste

  • Radioactive waste

  • Chemical waste

  • Animal product waste

Please read the explanations on the classification of wastes here

The African Star Apple is a seasonal fruit that grows abundantly in Nigeria and other West African Countries. It's fondly called African Cherry, Agbalumo or Udara in some parts of Nigeria.

African Star Apple, Cherry, Agbalumo, Udara - Len Academy

Below are some benefits of the African Star Apple:

  • It contains high amount of vitamin C

  • It contains a high amount of calcium

  • It contains high amount of potassium

  • It is a powerful antioxidant

  • It aids in weight reduction

  • It contains a high amount of iron

  • Its leaves, fruits and seeds are medicinal

  • It aids digestion and prevents vomiting

Please read more on the African Star Apple here

Disaccharides are composed of two monosaccharides joined together; thus are also referred to as double sugars.

Disaccharides are often added as sweeteners to food; for instance, the table sugar called sucrose is a disaccharide often used by us to sweeten our tea.

Maltose is another disaccharide used as an ingredient for making malt drinks, chocolates and candies.

The breast milk contains the disaccharide Lactose.

Lactose is very vital for the normal growth and development of infants.

In adults, disaccharides are non essential nutrients. This implies that we can live without them as adults.

Below is a summary of monosaccharides that make up disaccharides (double sugars).

  • Maltose = Glucose + Glucose

  • Lactose = Glucose + Galactose

  • Sucrose = Glucose + Fructose

Other examples of disaccharides include trehalulose and isomaltulose

Polysaccharides are complex sugars. These are what we often eat whenever we eat carbohydrates.

We have four types of polysaccharides namely:

  1. Starch
  2. Glycogen
  3. Chitin
  4. Cellulose

 

  • Starchy foods include rice, cassava and yam.

  • Glycogen is stored in the human liver; as a result of the joining of many glucose molecules.

  • Chitin is a major component of insect and anthropod's skeleton.

  • Cellulose is a major component of a plant's cell wall. They cannot be digested when eaten by humans; hence they function as roughages.

Roughages are not classified as one the classes of food in humans. This is due to the fact that they aren't digested. They will rather facilitate the movement of bowels in the large intestine (colon); and for this reason, they can be very useful in treating constipation.

Please read more on carbohydrates here